Riod-bachni



- I 3 Sheets-Sheet 3 G. E. HENRIUD-BAGHNI. V WATGHCASE TURNING MACHINE.

(No Model.)

Patented Dec. 4, 1894.

UNITED. STATES PATENT OFFICE.

CHARLES EDOUARD HENRIOD-BACHNI, OF BIENNE, SWITZERLAND.

WATCHCASE-TURNING MACHINE.

SPECIFICATION forming part of Letters Patent No. 530,227, dated December 4, 1894.

ApplicationfiledMay 29,1893. Serial No. 475,911. (No model.) Patented in Switzerland October 5, 1892,110. 5,840; in France I February 16, 189 3, No. 227,977, and in England July 19, 1893,No.14,008.

To all whom it may concern.-

Beit known thatI, CHARLES EDOUARD HEN- RIOD-BACHNI, a citizen of the Republic of Switzerland, residing at Bienne, canton of Berne, in the Republic of Switzerland, have invented certain new and useful Improvements in Watchcase-Turning Machines, (for which I have obtained patents in Great Britain, No. 14,008, dated July 19, 1893; in France,

No. 227,977, dated February 16, 1893, and in Switzerland, No; 5,840, dated October 5, 1892,)

and I do hereby declare the following to be a' full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention for improvements in watchcase turning machines has for its object to turn watch cases from the blanks by means of machinery to which the blanks are automatically and successivelyv fed, chucked, turned and released thus insuring accurate and standard work and considerablyincreasing the output hitherto attainable.

Hitherto the watch cases have been chucked, turned, and released by hand and consequently it has been impossible to obtain accurate and standard work as the size varied with the pressure on the turning tools and the clamping was liable to dent or press the case out of shape if the pressure exerted was too great while on being clamped automatically they are always subjected to the same pressure. a

In the accompanying three sheets of illustrative drawings Figure 1 is a plan of a machine for automatically turning watch cases,

constructed according to this invention, and

Fig. 2 is a central and vertical longitudinal section, and Fig. 3 a vertical cross section on the line zz, Fig. 1, of the same. Figs. 4 and 5 are vertical sections of the slides carrying the cutting tools. Figs. 1, 2, 3, 6, 7, 8, 9 and 10 are detail views. I

The head-stock 0 is fitted on the table t in such manner that it may be slid along the runner t in the direction of its axis and toward the slide rests by means of the cam shaped disk at, on the shaft 1,6 The springs 11 fixed to the head-stock c and the table 25 bring the head stock back to its first position so soon as the cam shaped disk n ceases to act thereon, as shown in Figs. 1 and 2.

In the head-stock 0 is fitted the spindle a, which is hollow and carries between the bearings of the headstock the cone pulley c by means of which it is driven from the countershaft V as shown in Figs. 2 and 3. On the end of the spindle a, projecting toward the slide rests is screwed a hollow chuck a provided with longitudinal slots and in the slotted front portion of which is clamped the object to be worked. Through the hollow spindle a and through a part of the chuck runs a rod e carrying a cone (2 on the front part within the chuck a. This cone e presses outward in aradial direction the slotted parts of the chuck a which is also of a conical shape inside, as soon as the rod 6 is moved against the front end of the chuck a. The forward movement of the rod 6 takes place each time anobject to be worked is clamped in the chuck a or when a finished article leaves the-chuck. It is effected by means of a lever d which s moved againstthe back end of the rod 6 by the cam d, which is fitted on the shaft to, as shown in Figs. 1,2, 2* and 10.

In front of the head-stock are fitted, one on each side, the slides g andh which slide in corresponding guides fitted to the table if at right angles to the-axis of the spindle. The movement toward the chuck a, that is the spindle axis, is effected, in the case of the slide g by the cam m and in the case of the slide 72. by the cam 72,. The opposite movement, that is away from the chuck and spindle axis, is

efiected so soon as the cams have ceased to act, by the closing together of the springs 2 2 and 3 3 which have been extended by the previous movement toward the chuck. On the slide g are fitted two slides g and g, each of which carries another slide g and g, on which last slides are fixed the cutter holders B and B The slide g is adjustable in the direction of movement of the slide g by means of the screw 0, while the slides g, and g, can be adjusted at right angles to this direction by the screws '0 The slides g and g and the cutter holder B always follow the movement of the slide g. The slides g and g and the cutter holder 8,

receive, beyond the movement imparted to them by means of the slide g, a further forward movement from the cam a acting on the screw v whereby the corresponding backward 5 movement takes place through the spring 2 (Fig. 1) which is fixed at one end to the slide 9 and at the other end to the slide 9 By means of the screw which is screwed into the slide 9 and on the head of'which the cam n acts the extent of the movement of the slide 1 effected by the cam can be regulated as desired. On the slide 72. are fitted the pairs of slides h, 7t, and 72 h together with the cutter holders B and B Both these pairs of slides only follow the movement of the slide it and none of them receive a special movement after the maunerof the pair of slides 9 9' In the cutter holder B is fixed the cutter D in 13 the cutter b in B the cutter b and in the cutter holder 13 the cutters I1 and The two shafts m 971 of which one on carries the cams 02 and a and the other m the cam 91,, are fitted at the two sides of the table tin bearings m and are driven by means of the worm gearing 0 from a shaft u, in the bearings u. The shaft a, is driven from shafting through the cord pulley 8. Parallel to this shaft to, and in the same plumber-block u is fitted a shaft a on which are fixed the cams 72 and (1 already mentioned, and which receives its movement from the shaft m through thecone gearing q On the shaft m which carries the cams 01 and 72 is fitted a further earn 11 which works on a lever 70. This lever 70 carries a rod 70 which by means of an elbow lever is connected with a friction coupling F on the countershaft V in such manner that each time a fresh object is to be clamped in the chuck that part of the counter shaft V which carries the cone pulley is put out of gear whereby the spindle 01 is also brought to rest as shown in Figs. 2 and 3. On the shaft m which carries the cam 11 are also fitted the cams a and a and the side cam 91 By means of the cam n, a lever 11 connected to the piston of an air pump Z, Fig. 8, is moved whereby air is forced through the tube Z onto the cutters and the chuck a. lVith the same lever '11 is connected a suitable system of levers moving a brush f, Fig. 6, against the chuck a whereby the latter is cleaned, and this takes place each time before a fresh object is taken by the chuck. By means of the cam 01, a jaw 19, Fig. 7, connected to a system of levers and carrying a moist roll, is moved against the article being worked so that the latter is always moistened. By means of the side cam 42 in connection with the two armed lever r, the longest arm of which rests on the funnel r, Figs. 1 and 2, this funnel is pushed on one side each time the object being worked leaves the chuck a. The purpose of this is that the waste turnings which are led through the funnel or hopper 0' into a cask placed thereunder may be kept away from the finished articles falling out of the chuck a, so that the funnel 0 may be more easily moved to one side. The upper part thereof is made of leather or other suitable material.

The distributing apparatus serving to take automatically into the machine the articles to be worked, is formed essentially of a tube T intended to take the objects such as the middlcs, bottoms and bezels to be distributed and is held in a support 6 by means of the piece 7 and the screw 8. The support (3 is fixed on the part 4 of a carriage sliding in the groove t, of the base if of the machine and composed of two parts t and 5. This carriage is put in movement by a lever 9 jointed at the point 9 and actuated by the cam n in such manner that the extremity of the tube carrying the springs 11 approaches the chuck a in such manner that the latter can take hold of and grasp the object to be worked. During this movement of the carriage 4, 5, the springs 10 fixed to a cross piece t mounted on the carriage and to the base t are compressed and can thus produce the return movement of the distributer as soon as an article has been dealt with.

The articles to be distributed are piled up in the tube T the bore of which corresponds to their diameter. They are pressed against the end of the tube carrying the springs 11 by means of the piston 13 actuated by the weight 12. The springs 11 project toward the inside of the tube T so that the articles to be worked although pressed forward by the piston 13 cannot fall. The springs 11 being pushed against the chuck a by the movement of the carriage 4, 5, open out and then allow the front piece therein to come out. This article is then pressed into the chuck a by the pressure of the piston 13.

If by chance the article is not of the required diameter allowing it to be taken in the chuck a, the tube T or the lever 9 might be bent nnderthe considerable strain that they would have to surmount. In order to obviate this inconvenience the upper part 4 of the carriage 4', 5 is attached only by a spring 15 to the lower part 5 so that the tubeT may if necessary be stopped before the part 5 of the carriage has arrived at the end of its course. The screw 14.- arranged on the part5 of the carriage serves to regulate the distance between the two parts of the carriage.

Suppose the machine to be at work and turning the cases:In order to turn the inside and outside of the middle 20 at the bottom end 22 the middle is held in the chuck a by the bezel end 21 as shown in Fig. 10. The head stock and the chuck a then advance so that the cutter 17 is inside the middle. The cutters b and b are then pressed against the middle by the eccentrics n, and 91 in such manner that the cutter b cleans off the inside of the middle while the cutter b roughs out the ornamentation, the two cutters acting at the same point with only the thickness of the metal between them. When. there is much material to be removed the cutter b, is

may

placed by means of the regulatingscrews o, and o, so that it may assist in this operation. In this case the cutters b 1), and 12 work at the same time. As soon as the eccentrics n, and n, have ceased to operate the cutters leave the work and at the same time the head stock moves back with the chuck a. The cutter b, is then forced against the middle and finishes off the ornamentation of the bottom end of the outside. During this time the work is kept moist by the roll of the clip 1) thus preventing the cutters from getting too warm. The machine is then stopped by means of the eccentric n, and the chuck is opened by means of the eccentric d, and the middle falls through the funnel 1". During thelatter period the brush f cleans the chuck (L and the pump Z blows away the refuse. The feed apparatus then brings a fresh case to the chuck a and the operation is again effected and so on.

In order to turn the inside and outside of the middle at the bezel end, the middle is held in the chuck by its bottom end. The cutters b and b, then Work again as has been described. This'done the chuck moves back, the cutter b finishes the outside of the bezel end and at the same time the cutter b, finishes the center of the outside of the middle. The cutter b, may again help in the turning when there is much material to remove. The chuck then opens and the case falls out through the discharger. For each end of the middle the cutters must be changed and their position must be accurately adjusted. For turning the bezels and bottoms two cutters are used working successively. The pieceto be turned is first clamped in the chuck so that one of the cutters cleans out the inside. It is then clamped on the other side so that a second cutter may finish the outside. During this operation the head-stock keeps its position, the eccentric 91 having been put out of gear. V

The machine can also be constructed with a single spindle carrying the eccentrics for the carriages, 850., instead of the two spindles m and m,. This spindle is placed below the machine. The carriages, &c., are operated from theeccentrics by means of suitable intermediary gearing.

.What I claim, and desire to secure by Letters Patent, is

1. A machine for turning watch cases which comprises a holder in which the cases are held, a rotating chuck, and a series of cutters, means for automatically feeding the cases from the holder to the chuck, means upon the said chuck for gripping the same, means whereby the cases are automatically brought successively in front of the several cutters,

and forced in contact therewith when opposite the same, and means for releasing each case immediately upon its being completed, substantially as shown and described.

2. A machine for turning watch cases, which comprises in its construction the rotating scribed.

chuck ct having means thereon for holding the cases, a sliding headstock carrying the said chuck, a series of cutters in front of the said chuck, a plurality of cams as shown, mounted upon a slow-running countershaft, the said camsbeing so formed and arranged thereon as to engage with the headstock and reciprocate the same and bring the cases successively opposite and adjacent to the cutters, and slide-rests carrying the said cutters, a second countershaft having cams mounted thereon which engage with the slide-rests to force the same inwardly, and means whereby the said cams are brought into engagement with the rests immediately upon each case being fed forward by the chuck, substantially as shown and described.

3. In a watch case turning machine the combination, with a chuck having spring jaws adapted to grip the watch case, a sliding headstock carrying the said chuck, and means for intermittently reciprocating the headstock to force the cases forward successively, of a cone adapted to enter between the jaws of the chuck to open the same and release the case therefrom, a cam mounted upon a slow-running countershaft, and means whereby the said cam forces the cone against the jaws of the chuck, substantially as shown and de scribed.

4. In a watch case turning machine, the combination, with a chuck, means for automatically causing the said chuck to grip a watch case and release the same after turning, and a series of cutters, of abellows having its mouth opposite the chuck and the cutter, and a cam adjacent to the said bellows, mounted upon a slow-running shaft and so arranged as to intermittently actuate the bellows and force a blast upon the cutters and the chuck, substantially as shown and described.

5. In a watch case turning machine, the combination, with a chuck adapted to automatically grip and release a watch case, of a bellows opposite the chuck, a brush adjacent thereto, a moist roll held agaist the case whilev being turned, and means whereby the said bellows, brush and roll are automatically brought to bear upon the chuck, and the watch case, respectively after and during each operation, substantially as shown and de- 6. In a vwatch case turning machine, the combination, with a chuck having springjaws adapted to grip the watch case, of a tube provided with a stop arrangement atits end and adapted to receive the watch cases therein, a feeding device for forcing the cases toward the end of the tube, a cam mounted upon a slow running countershaftand engaging with the tube to intermittently force the same against the chuck and release the stop arrangement thereon, whereby a case may be inserted in the said chuck, and an attachment adapted to enter between the jaws of the chuck and release the case therefrom after the completion of the operation,substantially as shown and described.

7. In a watch case turning machine the combination, with a chuck, a sliding headstock carrying the same and intermittently reciprocated, a tube provided with spring jaws at its end adapted to carry the cases, means for forcing the cases toward theend of the tube, a cam mounted upon a slow running countershaft, and engaging with the tube to force the same against the chuck, whereby the jaws of the tube are opened and a case inserted in the chuck, and an automatic attachment for releasing the case from the jaws of the chuck after the operation is completed, substantially as shown and described.

8. In a watch-case turning machine, the combination with an automatic chuck, of a tube provided with spring jaws at its ends and adapted to carry the cases, of a means for forcing the cases toward the said end, of a sliding holder on which the tube is mounted, of a slide rest on which the sliding holder can slide, of aspring to retain the holder and rest in their relative positions and of an cecentric or cam on a slow running countershaft for operating the rest to force the tube against the chuck'substantially as specified for the purpose set forth.

In testimony whereof I have affixed my sigo nature in presence of two witnesses.

CHARLES EDOUARD llE-NRIOD-BACIINI.

Witnesses:

T. A. ROSSEL, T. BACHNI, Fils. 

